标签：ack 基础 sys 数据 port 对象 lis name main
package com.test.testfan; public class testfan_01_01_数组 { /** * @param args */ public static void main(String[] args) { // TODO 自动生成的方法存根 int[] a = new int[]{33, 33,3, 44}; System.out.println(a[0]); System.out.println(a.length); System.out.println(a[a.length-1]);//获取最后位数据 /*for (int i = 0; i < a.length; i++) { int j = a[i]; System.out.println(j); }*/ int[] b = new int[100]; b[0] = 1; b[1] = 1; b[2] = 1; b[3] = 1; b[4] = 1; System.out.println(b.length); } }
package com.test.testfan;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class testfan_01_02_集合 {
public static void main(String[] args) {
// TODO 自动生成的方法存根
List<String> list = new ArrayList<String>();
list.add("200");
String valueString = list.get(0);
System.out.println(valueString);
System.out.println(list.size());//类属性
//System.out.println(list.);//类属性
//通过数组
for (int i = 0; i < args.length; i++) {
String string = args[i];
}
List<Integer> list2 = new ArrayList<Integer>();
list2.add(200);
int value2 = list2.get(0);
for (int i = 0; i < args.length; i++) {
String string = args[i];
System.out.println(string);
}
//通过集合
for (Iterator iterator = list2.iterator(); iterator.hasNext();) {
Integer integer = (Integer) iterator.next();
System.out.println(integer);
}
//通过数组
for (int i = 0; i < args.length; i++) {
}
//通过迭代器
for (Integer integer : list2) {
System.out.println(integer);
}
}
}
package com.test.testfan;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class testfan_01_02_集合 {
public static void main(String[] args) {
// TODO 自动生成的方法存根
List<String> list = new ArrayList<String>();
list.add("200");
String valueString = list.get(0);
System.out.println(valueString);
System.out.println(list.size());//类属性
//System.out.println(list.);//类属性
//通过数组
for (int i = 0; i < args.length; i++) {
String string = args[i];
}
List<Integer> list2 = new ArrayList<Integer>();
list2.add(200);
int value2 = list2.get(0);
for (int i = 0; i < args.length; i++) {
String string = args[i];
System.out.println(string);
}
//通过集合
for (Iterator iterator = list2.iterator(); iterator.hasNext();) {
Integer integer = (Integer) iterator.next();
System.out.println(integer);
}
//通过数组
for (int i = 0; i < args.length; i++) {
}
//通过迭代器
for (Integer integer : list2) {
System.out.println(integer);
}
// 数组属性使用
List<Integer> list3 = new ArrayList<Integer>();
if(!list3.isEmpty()) {
int list4 = list3.get(0);
System.out.println(list4);
}
list3.add(200);
}
}
package com.test.testfan;
public class Person {
public String name;
public int age;
private double money=1000;
public String sex;
public double getMoney() {
return money;
}
public void setMoney(double money) {
this.money = money;
}
}
package com.test.testfan;
public class testfan_01_03_对象 {
public static void main(String[] args) {
// TODO 自动生成的方法存根
Person p1 = new Person();
Person p2 = new Person();
p1.name = "zhangsan";
p1.setMoney(60000.00);
System.out.println(p1.name);
System.out.println(p1.getMoney());
System.out.println(p1);
System.out.println("-------------");
p2.name = "zhangsan9999";
p2.setMoney(90000.00);
System.out.println(p2.name);
System.out.println(p2.getMoney());
System.out.println(p2);
}
}
标签：ack 基础 sys 数据 port 对象 lis name main
原文地址：https://www.cnblogs.com/wujianbo123/p/10962938.html
